After today's kernal update, the problem still persists.
Jan 20 06:07:30 alan-desktop kernel: [ 910.375483] Xorg[1310]: segfault at b56b5000 ip b50fd3e1 sp bf864580 error 7 in nvidia_drv.so[b5024000+62a000] I also noticed a message in the log that there was no NVIDIA graphics adapter found: Jan 20 06:08:20 alan-desktop kernel: [ 15.210590] nvidia: module license 'NVIDIA' taints kernel. Jan 20 06:08:20 alan-desktop kernel: [ 15.210593] Disabling lock debugging due to kernel taint Jan 20 06:08:20 alan-desktop kernel: [ 15.337035] NVRM: No NVIDIA graphics adapter found! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/882710 Title: Dual monitors black out and session freezes, might be linked to switching workspaces To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/882710/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs